Air filter assembly



FIG. 1 is a front perspective view of the air filter assembly according to the present design;

FIG. 2 is a top plan view for an air filter assembly as shown in FIG. 1;

FIG. 3 is a bottom plan view for an air filter assembly as shown in FIG. 1;

FIG. 4 is a left side elevation view for an air filter assembly as shown in FIG. 1;

FIG. 5 is a right side elevation view for an air filter assembly as shown in FIG. 1;

FIG. 6 is a front elevation view for an air filter assembly as shown in FIG. 1; and,

FIG. 7 is a rear elevation view for an air filter assembly as shown in FIG. 1.

The features shown in broken lines in FIGS. 3,4,5 and 6 depict portions of the air filter assembly that form no part of the claimed design. 

The ornamental design for an air filter assembly, as shown and described. 